Well, I can't find the post where he talks about making them, but I know what he did and the products he used. I don't know if they're wide enough for your purposes, though. He bought this light cage:
He cut the dome part towards the bottom off, then wrapped the entire thing in hardware cloth using zip-ties and silicone on the sharp edges, which gave him an end result of this:
I'm also curious as to what you're using that's 5 inches wide? I measured my CHE's and they're only 3.5 inches in diameter.
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